Change infobar creation to use a public static Create() method on the infobar delegate classes.

chrome/browser/alternate_nav_url_fetcher.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/alternate_nav_url_fetcher.h"
 
 #include "chrome/browser/api/infobars/infobar_service.h"
 #include "chrome/browser/infobars/alternate_nav_infobar_delegate.h"
 #include "chrome/browser/intranet_redirect_detector.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 124 matching lines @@
     // they type.  See comments on IntranetRedirectDetector.
     state_ = ((status.status() == net::URLRequestStatus::CANCELED) &&
       ((response_code / 100) == 3) &&
       !net::RegistryControlledDomainService::SameDomainOrHost(url,
           IntranetRedirectDetector::RedirectOrigin())) ? SUCCEEDED : FAILED;
   }
 }
 
 void AlternateNavURLFetcher::ShowInfobarIfPossible() {
   if (navigated_to_entry_ && (state_ == SUCCEEDED)) {
-    InfoBarService* infobar_service =
-        InfoBarService::FromWebContents(controller_->GetWebContents());
-    infobar_service->AddInfoBar(
-        new AlternateNavInfoBarDelegate(infobar_service, alternate_nav_url_));
+    AlternateNavInfoBarDelegate::Create(
+        InfoBarService::FromWebContents(controller_->GetWebContents()),
+        alternate_nav_url_);
   } else if (state_ != FAILED) {
     return;
   }
   delete this;
 }